Merge "[DO NOT MERGE] Make screenshot error notification PendingIntent immutable" into rvc-dev am: 9c62f07486

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13519315

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I33c800e9deb541cef26cb5f668b337b6b8a63e28